Turbine-driven locomotive



July 13 1926. I 7 1,592,331

' I H. BOLTSHAUSER' TURBINE DRIVEN LOCOMOTIVE Filed May 25, 1925 Patented July 13, 1926.

UNITED STATES 1,592,331 ATENTTOFFI'CE.

'- HEINRICH BOLTSHAUSER, OF ZURICH, SWITZERLAND.

TURBINE-DRIVEN LOCOMOTIVEV Application filed 2'5, 1925, Serial No. 32,652, and in Switzerland Ma 30, 1924 The invention refers to a turbine driven locomotive having at least two drlvmg turbines working in parallel. Locomotives of this type are especially suitable for developing large powers as with these locomotives in spite of large quantities of steam consumed the blades of the last stages of the turbines have not to be made of excessive length. If the turbines workon the driving axles through. the interposition of toothed gearings the further advantage is obtained that alsowith large outputs of the turbines the width of the gear wheels does not get excessive, so that the wheels are not dis torted when transmitting heavy loads, do not produce too much noise and are not subjected to a quick wear owing to excessive stresses; i I

The object of the present invention is to provide a locomotive ofv the above mentioned type comprising one or more groups of turbines of simple and compact design. This is of great importance with locomotives 011 which the available space is extremely limited. i

To this end according to the present invention the turbines are arranged to T the same side of the longitudinal. centre plane of the locomotive and they have an exhaust branch common to both turbines. This arrangement presents the further advantages that leakage losses on connecting points as well as losses due to drop in pressure and the like are limited to a minimum amount. i Vhere it is necessary to subdivide the condenser owing to. its weight, the exhaust branch may be connected to a part of the condenser arranged in front of the turbines of the group as well as to one or more parts of said condenser arranged laterally of the locomotive boiler.

constructional examples of the subject matter of the present invention are diagramatically illustrated on the accompanying drawings, in which:

Fig. 1 shows a turbine driven locomotive provided with a condenser subdivided into three parts,

Fig. 2 shows in a plan-view, with the boiler removed, the turbine and the parts of the condenser of this locomotive and some parts of the drive. V

Fig. '3 shows in a plan view corresponding to that shown in Fig. 2 a constructional example in which the condenser is arranged in front of the two turbines, and

the locomotive.

. Fig. 4 shows in a plan-View a further arrangement, 1n which one partoof the condenser is arranged in front of the turbines and avsecond part of the condenser is situated to the slde of the locomotive boiler. Fig. 5 shows in an elevation view a turbine driven locomotive anda driving tendto each other and at right angles to the The longitudinal axis of the locomotive. turbines 1 and 2 are situated on the same side of the longitudinal centre plane of Each of the turbines con-' tains a largernumber of stages for the ahead running and a smaller number of stages for the astern running. steam supply pipe.

Each of the two turbines 1 and'2 actuates a lay shaft 6 by the interposition of a toothedrgearing l and 5 respectively comprising a gear wheel 15 common to both; the power transmission from the lay shaft 6 to the driving wheels 17 is effected in a known manner by means of a parallel crank gear 16. The turbines 1 and 2 are provided with an exhaust branch 7 common to both which is connected to a condenser part 8, arranged in front of the turbines on the front part of parts 10, 11 arranged laterally of the locomotive boiler 9. The turbines 1 and 2 are arranged laterally of the common exhaust branch 7 and are preferably so dimensioned that each of them delivers approximately one half of the desired power of the locomotive and consumes therefore approximately one half of the total amount of steam.

Instead of subdividing the condenser into three parts the lattermay be designed as a single body in the manner shown in Fig. 3, where it is designated by the reference numeral 12. In this embodiment the condenser is arranged in the front part of the locomotive before the turbines 1 and 2. parts in this figure which correspond to those in the first constructional example are designated by similar reference numbers.

Fig. 4 illustrates an arrangement with a condenser consisting of two parts 13 and 14:, of which part 13 is arranged in front of the turbines 1, 2 and part 14: is arranged later- 3 denotes the the locomotive as Well as the two condenser The ally of the locomotive boiler 9. The exhaust branch 7 common to the turbines 1 and E2 is connected to both parts 13 and 14 of the condenser, the turbines 1 and 2 situated to the same side of the longitudinal centre plane of the locomotive are also in this case arranged laterally of this branch 7. 3 denotes again the steam supply pipe and f1, 5 are gear wheels of the transmission gearing.

The manner in which the drive is effected from the turbines 1 and 2 to the driving axles is immaterial to the essence of the present invention. For instance, the pinions in, 19 of the first transmission ratio of the two turbines 1 and 2 may cooperate with a gear wheel 20 common to both pinions, instead of providing, as illustrated in Figs. 1 and 2 a common gear wheel 15 on the lay shaft 6 with which the pinions of the second transmission ratio cooperate. 7

Finally, it may be mentioned that in the manner illustrated in Fig. 5 several groups of turbines of the above described type may be used, for instance one group 1, 2 in the front on the locomotive and another group 21, 22 att'he rear on the tender which is provided with a recooling device 2% for the cooling water of the condenser. In this case one group of turbines may, for instance, solely consist of ahead turbines and the other solely of astern turbines.

I claim:

1. A turbine driven locomotive comprising at least one set of two driving turbines arranged at the same side of the longitudinal central plane of the locomotive, the two turbines of each set working in parallel and transn'iitting power to a common driving gear, and an exhaust branch also common to both turbines.

2. A turbine driven locomotive comprising in combination, a locomotive boiler, at least two driving turbines arranged to the same side of the longitudinal centre plane of the locomotive, an exhaust branch common to both turbines, and a condenser, one part of which being arranged in front of the turbines and another part being arranged laterally of said locomotive boiler, said common exhaust branch being connected to said parts of the condenser.

3. A turbine driven locomotive comprising in combination a locomotive boiler, at least two driving turbines arranged to the same side of the longitudinal centre plane of the locomotive, an exhaust branch common to both turbines, and condenser consisting of three parts of which one part is arranged in front of the turbines and the other two parts are arranged on different sides of the locomotive boiler, said common exhaust branch being connected to all the parts of the condenser.

l. A turbine driven locomotive having a locomotive frame and a boiler thereon in combination with at least tWo driving turbines for the locomotive working in parallel and arranged at the same side of the locomotive frame and between the frame and boiler, and an exhaust branch common to both turbines.

5. A turbine driven locomotive having a locomotive frame and a boiler thereon in combination with at least two driving turbines for the locomotive working in parallel and arranged to the same side of the locomotive frame, an exhaust branch common to the turbines, and a sub-divided condenser connected to said exhaust branch, one of the condenser parts extending across the frame at the front thereof.

In testimony whereof I have signed my name to this specification;

HEINRICH BOLTSHAUSER. 

